Finding the Third Proportional to 39,609 and 52,798.50

Step by Step Solution

1. Step 1: Write the proportion equation
   39,609 : 52,798.50 = 52,798.50 : x
2. Step 2: Convert to fraction form
   39,609/52,798.50 = 52,798.50/x
3. Step 3: Cross multiply
   39,609x = 52,798.50 × 52,798.50
4. Step 4: Simplify right side
   39,609x = 2,787,681,602.25
5. Step 5: Solve for x
   x = 2,787,681,602.25/39,609
6. Step 6: Final answer
   x = 70,380.00